GB315391A - Improvements in luminous electric discharge tubes - Google Patents
Improvements in luminous electric discharge tubesInfo
- Publication number
- GB315391A GB315391A GB9169/29A GB916929A GB315391A GB 315391 A GB315391 A GB 315391A GB 9169/29 A GB9169/29 A GB 9169/29A GB 916929 A GB916929 A GB 916929A GB 315391 A GB315391 A GB 315391A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- light
- discharge
- wires
- tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/10—Shields, screens, or guides for influencing the discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0048—Tubes with a main cathode
- H01J2893/0056—Parts inside tubes brought to incandescence by the discharge
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
315,391. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). July 14, 1928, [Convention date]. Vacuum tubes low-pressure metallicvapour apparatus. - The discharge in a gas or vapour lamp is guided through a hollow member of conducting refractory material preferably of metal such as tungsten which may be formed with interstices along its length so that the positive column is confined inside the member, possibly by a space charge outside. The hollow guide 16 may consist of a perforated sheet or of crossed wires or strip, and may be of oval, cylindrical, or prismatic shape. It is supported by nickel or molybdenum sleeves 15 on the necks of vessels 10 of quartz or ceramie material such as magnesium oxide which enclose the electrodes 7 and are connected together by rods or tubes 13, the structure being loosely mounted on foot tubes 3. The electrodes have enlarged heads carrying a material 9 which ensures the starting of a discharge and gives a good electronic emission. Sleeves 17 of quartz or ceramic material surround the electrodes so as to confine the discharge. The filling may consist of common gas such as nitrogen or carbon dioxide, rare gases such as neon, helium, or argon, or a mixture of rare and common gases. A metal such as mercury may be introduced or may form one or both of the electrodes. In modifications the hollow guide consists of (a) straight wires over which one or more wires are wound helically (b) straight wires mounted on an internal wire helix, (c) gauze covered with light-transmitting foil of refractory metal which may be chosen so as to modify the light emitted, or (d) a structure made of non-conducting rare earth oxides such as thorium, cerium, or scandium oxide, impregnated with molybdenum. Perforated plates may be built into the guide so as to increase the intensity of the light at certain points. Visible and infra-red radiation is obtained from a lamp with tungsten wire gauze, and ultra-violet light from the mercury filling. In the arrangement shown in Fig. 6, the electrode 8 is supported by an insulating disc 25 on a sleeve of magnesium oxide threaded over a pinch 4, and the lead 5 is surrounded by a tube 27 of insulating material. The electrode may evolve gas emitting light.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP58175D DE507502C (en) | 1928-07-14 | 1928-07-14 | Electric discharge lamp with gas or vapor filling, in which the gas or vapor discharge is guided in a hollow body arranged inside the lamp vessel |
DEP58429D DE510595C (en) | 1928-07-14 | 1928-08-21 | Electric discharge lamp with gas or vapor filling |
DEP60396D DE510594C (en) | 1928-07-14 | 1929-05-27 | Electric discharge lamp with gas or vapor filling, in which the gas or vapor discharge is guided in an electrically conductive and perforated hollow body arranged inside the lamp vessel |
Publications (1)
Publication Number | Publication Date |
---|---|
GB315391A true GB315391A (en) | 1930-01-09 |
Family
ID=31950191
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9169/29A Expired GB315391A (en) | 1928-07-14 | 1929-03-21 | Improvements in luminous electric discharge tubes |
GB24917/29A Expired GB317758A (en) | 1928-07-14 | 1929-08-15 | Improvements in luminous electric discharge tubes |
GB13579/30A Expired GB338844A (en) | 1928-07-14 | 1930-05-02 | Improvements in luminous electric discharge tubes |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24917/29A Expired GB317758A (en) | 1928-07-14 | 1929-08-15 | Improvements in luminous electric discharge tubes |
GB13579/30A Expired GB338844A (en) | 1928-07-14 | 1930-05-02 | Improvements in luminous electric discharge tubes |
Country Status (3)
Country | Link |
---|---|
US (3) | US1879470A (en) |
DE (2) | DE510595C (en) |
GB (3) | GB315391A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530990A (en) * | 1945-04-21 | 1950-11-21 | Gen Electric | Electric discharge device |
US2813221A (en) * | 1950-10-02 | 1957-11-12 | Rca Corp | Electron beam traveling-wave tube |
US2695970A (en) * | 1953-02-11 | 1954-11-30 | Sprague Electric Co | Glow lamp |
NL7807218A (en) * | 1978-07-04 | 1980-01-08 | Philips Nv | LOW PRESSURE GAS DISCHARGE LAMP. |
-
1928
- 1928-08-21 DE DEP58429D patent/DE510595C/en not_active Expired
-
1929
- 1929-03-21 GB GB9169/29A patent/GB315391A/en not_active Expired
- 1929-05-27 DE DEP60396D patent/DE510594C/en not_active Expired
- 1929-07-15 US US378471A patent/US1879470A/en not_active Expired - Lifetime
- 1929-08-15 GB GB24917/29A patent/GB317758A/en not_active Expired
- 1929-08-19 US US387057A patent/US1879471A/en not_active Expired - Lifetime
-
1930
- 1930-04-24 US US447015A patent/US1879472A/en not_active Expired - Lifetime
- 1930-05-02 GB GB13579/30A patent/GB338844A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE510595C (en) | 1930-10-28 |
US1879471A (en) | 1932-09-27 |
US1879472A (en) | 1932-09-27 |
GB317758A (en) | 1930-05-15 |
US1879470A (en) | 1932-09-27 |
GB338844A (en) | 1930-11-27 |
DE510594C (en) | 1930-10-28 |
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